public override LeadingChars EvaluateLeadingSymbols()
{
var chars = new LeadingChars(false, Enumerable.Empty <char>());
foreach (var rule in Rules)
{
chars = chars.Union(rule.EvaluateLeadingSymbols());
}
return(chars);
}
public override LeadingChars EvaluateLeadingSymbols()
{
var chars = new LeadingChars(false, Enumerable.Empty <char>());
var index = 0;
while (index < Rules.Length)
{
chars = chars.Union(Rules[index].EvaluateLeadingSymbols());
if (Rules[index].Type != RuleType.Optional)
{
break;
}
++index;
}
return(chars);
}